While I was sitting back looking up at the ceiling trying not to really keep my eyes glued on what the Doc was doing, I felt a mouth on my cock. Right away, my eyes shot down to my dick to find that Dallas was giving me head. He sucked on my dick, making me rock hard and with a boner. Although, he didn't just give all the attention to my dick he also sucked on my balls for a while as well. Going to just jerking me off, he used some lube and some steady stroking. I was horny as hell and knew that it wasn't going to take long for me to get off. Sure enough, I shot my load in the Doctor's hand and he didn't seem to mind. Getting a couple of towels we both cleaned up, and then I was told that I would be testing out my gag reflexes.